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Indian Jones crashes while playing

M

magnet0604

Registered
Joined
Nov 30, 2019
Messages
19
Location
Bromsgrove
Indian Jones crashes while playing and restarts onto test screen and tips on how to fix this annoying problem could it be a voltage drop? Not too technical on these machines and probably a pain to get some one out at the moment to look at it!


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5v reset pcb needed:

www.pinball.co.uk

5v reset fix PCB - Pinball Heaven

www.pinball.co.uk www.pinball.co.uk

Or if you can solder:

www.pinball.co.uk

5 Volt rebuild kit - Pinball Heaven

Fix your resetting Bally Williams WPC Pinball machine! These parts will stop the common reset problem on Bally/Williams games 1990-1994. Games normally reset when flippers pressed – in 99% of cases this will fix it. If you’re not confident enough to solder these in yourself. We will fit them...
www.pinball.co.uk www.pinball.co.uk

Or drop the machine to me in Brum and I will fix it. I can also come out but strict social distancing needs to be observed !
 
5v issue is a possible cause. Lots of guidance online about it.

I think Andy Netherwood produced this...


A problem with BR2 is a possibility, but is in fact rarely the cause of most reset problems.

It is more likely that there is a bad power connector. You need to carry out these checks first.

Measure against ground on a DC scale the voltage reading at TP2 on the power board at the 5V test point. If this is below 4.9 V then you have a problem on the power board, either with the LM323K regulator or the J101 power input connector.

Look to the right hand side of the power board and locate connector J101 which has red and blue wires. Remove and replace a couple of times. If it is scorched then it needs replacing. Re-check the 5V and see if any improvement.

If still less than 4.9V then replace LM323K rectifier.

If 4.9v or above, make a note of the reading and then take another measurement on the CPU on the top end of the copper coil you can see to the right hand edge of the CPU. If this is more than 0.04V less than the recorded reading from TP2 then the power connector between the two boards is at fault.

Locate the short grey ribbon connector that joins the CPU and power driver board.

Now remove and replace the connector directly below this on the power driver board. Do this several times, which basically removes contaminants and improves connectivity.

This may well solve the problem, but it may re-emerge in the future and the connector may need replacing long term.

If all the voltages are good, and you have more than 4.9V consistently on the CPU then you are at liberty to replace BR2 and its capacitor.
 
Thanks for advice I’ve ordered 5v reset fix so will plug that in when it arrives and hopefully be back to playing again!


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Got the 5v reset from pinball heaven, plugged it in and now playing better than ever thanks for the advice all!


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